iOS security-related apps are not very prevalent, but that should not lull you into thinking that the iOS ecosystem is ultimately secure. You should always be aware of what your apps are doing behind the scenes with your data. Previously on the App store and yanked, but now a free web app, Clueful, from anti-virus paragon BitDefender, tells you what the top apps are doing with your data. It might surprise you to know just how many seemingly innocuous apps are tracking your location, phoning home with vital device info, or worse. You can use Clueful to check if that popular free game or fart app that you can't live without is invading your calendar or contact info without good reason, or sending your data in the clear!